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| Registros recuperados: 12 | |
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| Brown, Mark G.; Lee, Jonq-Ying. |
| The paper focuses on separability in the almost ideal demand system (AIDS) in time series analysis. The AIDS approximation based on Stone's price index is specified in terms of the Rotterdam model and block additivity is imposed for illustrative purposes. A generalization to other types of separability is then considered. The model can be viewed as an extension to Theil et al.'s Working-PI time series model. In both the Theil et al. model and the AIDS model examined here, the marginal propensity to spend on a good is allowed to depend on the good's budget share. In the model in this paper, the Slutsky coefficients are further allowed to depend on the budget shares. The model provides a consistent way to analyze subgroup demand relationships. |
| Tipo: Report |
Palavras-chave: Almost ideal demand system; Separability; Rotterdam model; Demand and Price Analysis. |
| Ano: 1990 |
URL: http://purl.umn.edu/52711 |
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| Asche, Frank; Guttormsen, Atle G.; Kristofersson, Dadi; Roheim, Cathy A.. |
| A frequently encountered problem in import demand estimation is how to account for competition between imports and domestic production. Traditionally, use of the Armington model has been a way to handle this problem. This is a disaggregate model which distinguishes commodities by country of origin with import demand determined in a separable two-step procedure. The model appears frequently in analysis of international agricultural markets. However, the Armington model relies on a set of weak separability assumptions, which several authors have shown to be highly questionable. In this paper, a new aggregation theorem, the Generalized Composite Commodity Theorem (GCCT), is applied to test whether imports can be treated as a separate group. An advantage with... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Armington; Separability; GCCT; Demand system; Sword fish; International Relations/Trade; F18; Q11; Q22. |
| Ano: 2005 |
URL: http://purl.umn.edu/19432 |
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| Njonou, Rabelais Yankam; Frahan, Bruno Henry de; Surry, Yves R.. |
| This study has used a corrected likelihood ratio, with AIDS and Rotterdam demand models, to test separability in three separable (A, B, C) wheat import demand structures on the French common wheat market. It appears from the study that the three separable Rotterdam structures are accepted by the test, while only two of them (B and C) are accepted in the case of AIDS at 5% level of significance. Meanwhile, model B seems to be more indicated in demand analysis with AIDS since it is the only one accepted at 15% level of significance. The results obtained demonstrate not only the necessity to test separability in demand structures, but also the necessity to know how the allocation models can be used for demand analysis purpose. The study has also shown a great... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Separability; Import demand; Rotterdam and AIDS demand models; Wheat qualities; Demand and Price Analysis. |
| Ano: 2002 |
URL: http://purl.umn.edu/24921 |
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| Latruffe, Laure; Davidova, Sophia; Desjeux, Yann. |
| The paper analyses the imperfections in output and factor markets in Kosovo that act as a barrier to farm commercialisation. On the one hand, agricultural households may not have access to output market due to an underdeveloped downstream sector. On the other, local producers might not be preferred to importers as their production level is small with a variable quality due to constraints in factor markets. Data from the Agricultural Household Survey 2005 are used. A conceptual framework is developed on the basis of a household model where non-separability results from a “wedge” between purchase and sale prices due to transaction costs. The share of the output sold in the total value of output is regressed over a set of explanatory variables. A truncated... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Subsistence farming; Agricultural households; Separability; Market imperfections; Kosovo; Q12. |
| Ano: 2008 |
URL: http://purl.umn.edu/36860 |
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| Jung, Jione; Koo, Won W.. |
| The Korean livestock industry is currently facing the critical challenge of the market liberalization trend under the World Trade Organization. This study analyzes the consumption behavior of meat and fish products in Korea, by estimating the Linear Approximate Almost Ideal Demand System (LA/AIDS). The empirical results indicate that beef imports in Korea would increase in the future under trade liberalization. If cheap and better quality imported beef are introduced to Korean consumers, Hanwoo (Korean domestic cattle) beef would not maintain its market share. Key words: Meat, fish, trade liberalization, per capita consumption, demand, separability, and price elasticity. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Meat; Fish; Trade liberalization; Per capita consumption; Demand; Separability; And price elasticity.; Demand and Price Analysis. |
| Ano: 2002 |
URL: http://purl.umn.edu/19895 |
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| Registros recuperados: 12 | |
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